On Fri, 2007-03-16 at 12:51 +0100, Ingo Molnar wrote: > * Alexey Dobriyan <[EMAIL PROTECTED]> wrote: > > > [cc'ing folks whose proc files are affected] > > > > kallsyms_lookup() can call module_address_lookup() which iterates over > > modules list without module_mutex taken. Comment at the top of > > module_address_lookup() says it's for oops resolution so races are > > irrelevant, but in some cases it's reachable from regular code: > > looking at the problem from another angle: wouldnt this be something > that would benefit from freeze_processes()/unfreeze_processes(), and > hence no locking would be required?
Actually, the list manipulation is done with stop_machine for this reason. Alexey, is preempt enabled in your kernel? Rusty. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
